Portable electric heating device

Claim 1

A PORTABLE ELECTRIC HEATING DEVICE COMPRISING A HOUSING OF LOW THERMAL EXPANSION DIELECTRIC MATERIAL HAVING A COOKING UTENSIL RECEIVING SURFACE, TERMINALS FOR APPLICATION OF ELECTRIC POWER, TIMING MEANS EMBODYING A POWER CUT-OFF SWITCH, SAID TIMING MEANS BEING OPERABLE IN ACCORDANCE WITH A PREDETERMINED SCHEDULE, FIRST AND SECOND ELECTRICAL HEATER MEANS ELECTRICALLY CONNECTED IN PARALLEL FOR HEATING A MEDIUM TO A PREDETERMINED FIRST TEMPERATURE AND MAINTAINING SAID FIRST TEMPERATURE FOR A PREDETERMINED FIRST PERIOD OF TIME AND THEREAFTER SAID SECOND HEATER MEANS MAINTAINING A SECOND TEMPERATURE FOR A SECOND PERIOD OF TIME, SAID FIRST HEATER MEANS BEING ELECTRICALLY CONNECTED THROUGH SAID CUT-OFF SWITCH TO SAID TERMINALS, SAID SECOND HEATER MEANS BEING ELECTRICALLY CONNECTED TO SAID TERMINALS, A FIRST THERMOSTAT HAVING A CUTOFF TEMPERATURE OF SUBSTANTIALLY SAID FIRST TEMPERATURE, UPON BEING PRESET FOR SAID FIRST PERIOD OF TIME SAID TIMING MEANS IMMEDIATELY CLOSING SAID POWER CUT-OFF SWITCH THEREBY ENERGIZING SAID FIRST HEATER MEANS, SAID TIMING MEANS BEING CONTROLLED BY SAID FIRST THERMOSTAT SO THAT AFTER SAID MEDIUM HAS BEEN HEATED TO SAID FIRST TEMPERATURE SAID